Index. 



Electric light, long spectrum of, 309. 

 Electricity of air, Quetelet on, 408. 

 Electricity, force of, 409 ; negative, 



410. 

 Elephant's tooth, Dentalium entalis, 81. 

 Elm and its insect enemies, 191. 

 Elm, insects injurious to the, 28. 

 Emeus raised in this country, 61. 

 Engravings, method of cleaning, 146. 

 Entomological Society, 61, 225", 386. 

 Entomology : new coleoptera from 

 Cochin China, 225 ; insect flying 

 under water, 225 ; new spider from 

 Cochin China, 311 ; destruction of 

 injurious insects by hard-billed birds, 

 386 ; feet of insects, 393. 

 Entomostraca, ova of, 67. 

 Eolis, white, 81. 

 Epitnachus magnus, shoulder plumes 



of, 73. 

 Equatorial stands, Home and Thorn - 



thwaite's, 232. 

 Esop prawns, 80. 

 Ethalium septicum, 352. 

 Experiences of Haschisb, 435. 

 Experiment with sulphuretted hydro- 

 gen, 472. 

 Eye, the, and the microscope, 427. 

 Eyepiece, new, for telescopes, 62 ; com- 

 parison of aplanatic with Huyghe- 

 nian, 62. 



Eeet or insects, 393, 



Ferns, form of Vascular fasciculi, 468. 



Fibrous sub-integumentary aponeurosis 



of young giraffe, 14. 

 Eilograna implexa, 342. 

 Fishes, sudden destruction of, 60. 

 Flame used in spectrum analysis, 44. 

 Float of Ianthina, 471. 

 Flustra (Polyzoa), 79. 

 Fly, foot of the, 395. 

 Foot of the fly, 395. 

 Foraminifera of the Alps, 392. 

 Formic acid in honey, 94. 

 Fossil from Solenhofen, 388. 

 Fossil, feathered, from the lithographic 



limestone, 313. 

 Fossil groups, method of determining 



their age, 275. 

 Fossil human skeleton from Guada- 



loupe, 280. 

 Fowl with black periosteum, 472. 

 France, growth of cotton in, 469. 

 Freya, the genus, 311. 

 Frog in block of coal, 145, 226. 

 Frontal aponeurotic thickening of 



giraffe, 14. 

 Fruit jars, closing them, 310. 

 Fruit the favourite food of Birds of 



Paradise, 70. 



Fuel : wood, 398 ; peat, 400 ; coal, 

 400 ; charcoal, 401 ; coke, 401 ; pro- 

 duction of heat from, 401. 



Fulminant, powerful, 229. 



Fungus foot of India, 248. 



Furnaces, gas glass, 63. 



Furs, 162. 



Fusisporium inearcerans, spores of, 11. 



Galathea sqtjamteera, 82. 



Galeopithecus, flight of, 445. 



Gammarus sabini, 82. 



Garancine or Garanceux, 114. 



Gas glass furnaces, 63. 



Gautier on nebulse, 41S. 



Geikie on the last elevation of central 

 Scotland, 228. 



Gemmeous dragonet, 79. 



Geneagenesis, Quatrefages on, 103. 



Generations, alternation of, 101. 



Geological Society of London, 3S6. 



Geology : raised beaches of Scotland, 

 60 ; the sudden destruction of fishes 

 in the sea, 60 ; feathered fossil from 

 the lithographic limestone of Solen- 

 hofen, 313 ; the flying lizards of the 

 secondary rocks, 443. 



Gills and tail of tadpole, disappearance 

 of, 99. 



Giraffe, has it more than two horns ? 

 12 ; skeleton of young male, 16. 



Golden oriole in the New Forest, 19. 



Gonoplax augulatas, angular crab, 80. 



Grain, removing the husk from, 389. 



Granite, on its association with the 

 tertiary strata, 386. 



Grape sugar, where found, 91. 



Great comet of 1861, 311. 



Green, innocent, 229. 



Grey wagtail in Hertfordshire, 19. 



Growth of cotton in France, 469. 



Gunpowder in vacuo, 228. 



Gunpowder, new, 310. 



Gymnetrus, ribband fishes of the 

 genus, 1. 



Haik, volcanic, 472. 



Halicone dugong, one of the herbivo- 

 rous whales, 161. 



Halos, artificial, 45 ; formation of, 148. 



Haschisch, effects of, 346 ; experi- 

 ences of, 435. 



Heat, economic production of artifi- 

 cial, 398 ; its production from fuel, 

 401; conduction and radiation of, 404. 



Herbivorous whales, 161. 



Hercules, constellation of, double stars 

 in, 55. 



Herefordshire, rare birds in, 19. 



Heterocercal fishes, 444. 



Hilaria cilipes, leg of, 397. 



